<!DOCTYPE html>
<html>
<head>
	<title>进度条</title>
</head>
<body>
	<progress id="pro" min="0" max="100" value="20" max="">进度条标签</progress>
	<meter min="0" max="100" value="20" low="30" high="80">定义范围的标签</meter>
	<!-- <script type="text/javascript">
		var obj = document.getElementById("pro");
		setInterval(function() {	
			if(obj.value < 100){
				obj.value = obj.value + 1;
			}else{
				obj.value = 0;
			} 
		},100);
	</script> -->

</body>
</html>